Dental mold



Q 1,639,262 u 16,1927. J. LUKS ET AL DENTAL MOLD Filed March 26, 19263Sheets-Sheet 1 A .16,1 ug 927 J. LUKS EHL 1,639,262

n'swm. now Filed march 26. 1926 s Sheets-She et 2 1,639,262 J. LUKS ETAL DENTAL MOLD :Aug. 16,1927.

Filed March 26. 1926 3 Sheets-Sheet 3 Patented Aug 16,1927.

entree srarss PATENT oFFI'cE.

' JOACHIM LUKS AND JAMES Mnnonn eannnrr, or BRooKLrn, new YonKr a l i"DENTA MoLn.

; Application filed March as, 1926; Serial N6. 97,7 61.

This invention relates to dental molds and more especially to moldsadapted to contain a plastic material in one or more recesses and inwhich the'impression' of the denture is made. The mold being divided andthe sev eral sections hinged together, the object of the same being toreal: the plastic material Y on the dividing line so that the denturemay be removed and a cast of it made upon which a crown or other work.can be devised. One, or more of the hinged sections carry latches toengage studs on the other sections to hold the mold in itsclosed-relation or when opened a patch may beused asa-supr port for thesections in their open relation.

These and other objects and details of the invention are more fullydescribed in the following specification, setv forth in the ap pendedclaims and. panying drawings, wherein: a

Fig; 1 is a perspective view of the mold no its operative position andshowing the casts being made.- y r Fig. 2 is a perspective view of thedevice 0 J-JHGCl and the plastic mold separated.

Fig. 3 is an end view of the device opposite to the end shown in theabove views.

Fig. 4 is a bottom plan view; of themold.

Fig. 5 shows a longitudinal sectional view through a modified form ofmold.

" Fig. 6 is a plan view of the same'opened.

Fig. 7 is a plan view of a mold having locking rings. I l

Fig. 8 is a longitudinal vertical sect1onal view ofthe same. 1

Fig. 9 is an end View of the latter form of mold.

adapted to be produced in the improved mold. I r

The device consists of two identlcal sections of cast metal 10 and 11thatare hinged illustrated in the accom- Fig. 10 is aplan view ofanother modified at the bottom or lower face-by, means of the ordinaryhinge 12 each butt of same being secured to a section. I

When the two sections are closed, as shown in- Fig. 1, several pockets13 are provided and formed equally and identically as halves in eachsection and which are adapted to re-. ceive a soft and pliable material14 that will readilyrec eive the impression of atooth and retain sameaftergthetooth is removed and the material for the die is poured intothe cavity that remains. i

After the pliablematerial is inserted ma pocket of the closed mold andthe denture 15inserted and the material tamped it will befnecessa'ry todivide the pliable material equally sothe tooth may be removed withoutdisturbing or injuring its mold. In opening and separatingthe twosections the material l l'will separate so as to make an equal divisionon each side or aknife or-tool may be used to accomplish same.

The tooth 15 may now be removed from 1 the half in which it remains andto make the die the sections are now closed ready for the casting of thedie. When the die hasbeen in the mold long enough to set, it isremovedand the material 14 may be worked over to prepare it for another moldand die.v

'An important adjunct tothe moldis the latch16- that is pivoted to thesection 1O at one end by the stud 17 and which has an arciiate slot 18whose centre isthe stud 17 and that engagesthe stud sponding end of thesection 11. VV'nen the latch is in operation it securely locks the two.

sections so that the mold for the die may be made.

The separation of themold is a delicate operation and it is advantageousthat the mold be so located and positioned as to be readily accessible.

This preferred position is shown in Fig. 2 where it will be seen thatthe latch is thrown back to act as a support. for the section 10 and asthe closure edges 20 at the base of the sections are bevelled and littogether closely when the said sections are thrown open at an angle ofdegrees.

The butts of the hinge are countersunk in the sectionsso that the bottomof the mold is smooth and affords a solid foundation.

The pockets 13 may be used singly or all 19 on the corre-- made thematerial at the most important.

point carries the weight of the material above and renders it more solidand compact, preventing contraction of same and ensuring correctures ofthe crown, while any number of pockets can be employed and a quantity ofdies made at one time.

I vides for an elon In devices of this nature where a plurality ofpockets is necessary'this means is provided by the modified forms ofconstruction shown in Figs. 5to l l wherc novcl'conncctions are alsoshown for the hinged sections and the pockets arranged so that a numbermay be provided in a very limited space to secure the molds and dies.

The construction in Figs. 5 and 6 pro the two sections 23 and 2 t whichwhen closed, forms the pockets 25 for the molds. 'ihe two sections areprovided with hinge members 26 at each end and pintles 27 that may .beused one at a time,as the hinge, while the other effects the'closure.lVhen the sec tions are opened they ensure the retension ot the molds intheir upright position.

The arrangement of the sections shown in i s. 7 to 9 reverts to'thelocation of the ot' the sections so they may no opened d supporter at oftorty-tive dcggjrecs. The sections an... so have at each endsemi-cylindrical studs 30 slightly tapering to receive a ring 31 thatunites the sections while the mold is being prepared.

an it A more compact form of structure is shown in l0, l1 and 12andwhere it will be seen that it is ClIVlClGCl into three sec tions 32,and wlth the lines of divisionthrough the centres of a plurality oiDockets 35 and havin iin 'es at their lower 'ated structure made up ofThis construction may also be provided with the divided studs l0 to beheld together by the ring ll and when the sections are freed andseparated they may be spread out as shown in Fig. 14 so that the moldsare safe and accessible.

By these arrangements the molds may be opened'and divided to free themodel tooth with little danger of loosening the mold section andendangering it preparatory to castthe die.

It is obvious that the parts may be otherwise arranged and modifiedwithout departing from the essential features above described and fromthe scope of the appended claims.

'l fhat we claim as new is:

1. In dental molds, the combination of identical sections havingcorresponding res s adapted to form pockets, a bevelled to each sectionand'below the recesses, hinged members adjacent the bevelled edges, andlatch adapted to secure the sections together or to support the openmold in an upri t position. in dental molds, tl e combination ofidentical sections having recesses adapted when the sections are closedtogether to form mold pockets, bevelled edges to the sections and belowthe recesses, hinges uniting opposite sections, and means for supportingthe sections in a substantially upright ffposition while opened.

In dental molds, the combination 'oit' a i), mold comprising a pluralityof sections having oppositely disposed recesses .to constitute apockets, hingesunitingthe sections, bevelled edges a the hinged sides ofthe sections and pe mitting the opening of the sections on the hinges apredetermined distance, and means for supporting the sections in anupright position when open or to lock them together when closed.

4;. In dental molds, the combination of a mold comprising a plurality ofsections havin oppositely disposed recesses, hinges at the lower side ofthe sections, bevelled edges adjacent the hinges and adapted to permitthe opening of the sections suliicient-ly to atford access to therecesses, a stud on one of the sections, and a latch on the adjacentsection adapted to engage the stud to lock the sections together whenclosed or to'act as a legand support the mold in an upright positionwhen theseCtionS are opened. In testimony whereof we hereunto affix oursignatures.

JOAGHIM LUKS.v I JAMES MERCER GARNETT.

